Pioneer M-73 - Service Manual

Summary

Exploded Views, Packing, and Parts List

Schematic and P.C. Boards Connection Diagram

Line Voltage Selection

Details how to change the line voltage for HEZ and HB types.

P.C.B. Parts List

Power L Assembly Parts

List of semiconductors, capacitors, resistors, and diodes for the Power L Assembly.

Power R Assembly Parts

List of semiconductors, capacitors, and resistors for the Power R Assembly.

Reinforce L Assembly Parts

List of capacitors and resistors for the Reinforce L Assembly.

Input Assembly Parts

List of semiconductors, diodes, relays, capacitors, resistors, and connectors.

Front Assembly Parts

List of semiconductors, diodes, switches, relays, resistors, capacitors, and connectors.

Adjustments

For HB Type

Contrast of Miscellaneous Parts

Details differences in miscellaneous parts between M-73/HEZ and M-73/HB types.

Panel Facilities

Front Panel Controls and Indicators

Description of front panel switches, indicators, jacks, and controls.

Specifications

Amplifier Section Specifications

Technical specifications for amplifier output, power, and distortion.

Power Section and Other Specifications

Specifications for power requirements, consumption, dimensions, and weight.

Pioneer M-73 Specifications

Power

continuous power output	110 W x 2 / 220 W x 2
DIN power	125 W x 2 / 225 W x 2
dynamic power	170 W

Audio Performance

harmonic distortion	0.005%
frequency response	5 Hz - 150 kHz ± 9 dB
signal-to-noise ratio	120 dB

Power Requirements

power requirements	220 V, 50/60 Hz
power consumption	1000 W
weight	20.9 kg

Weight and Dimensions

external dimensions	459 mm (W) x 424 mm (D) x 163 mm (H)
input sensitivity	1 V/40 kΩ